Many studies have been done following the results of a lateral retinacular release (LRR). In this operation the fibrous tissue called the retinaculum is cut alongside the kneecap. Sometimes the surgeon will also cut the capsule surrounding the joint and the attached synovial tissue.

The results may vary depending on the cause of the problem. Results are best in patients with a tight retinaculum but a stable knee. Long-term results remain the same in this group. Patients with a dislocating patella may end up dislocating again years later.